Gas instantaneous water-heater.



J. SH-EPHEARD.

GAS INSTANTANEOUS WATER HEATER.

APPLICATION FILED DEG. 20, 1912.

Patented Aug. 18, 1914.

3 SHEETSSHEET 1.

J. SHEPHEARD.

GAS INSTANTANEOUS WATER HEATER.

APPLIGATION FILED DEG. 20, 1912.

1,107,370, Patented Aug.18, 19M

3 SHEETS-SHEET 2.

J. SHEPHEARIL GAS INSTANTANEOUS WATER HEATER.

APPLICATION FILED mo. 20, 1012.

L1 07 870. Patented Aug. 18, 1914.

SSHBETS-SHEET 3.

OFFICE.

JAMES SHEPHEARID, 0F DETROIT, MICIl-EIGAN, ASSIGNOR 0F ONE-HALF TO JOHN J.

ELLIS, OF DETROIT, MICHIGAN.

GAS INSTAN'I'ANEOUS WATER-HEATER.

Specification of Letters Patent.

Application filed December 20, 1912.

Patented Aug. 18, 1914. Serial No. 737,825.

T0 ah whom it may concern:

Be it known that I, JAMES SHEPIIEARD, citizen of the United States, residing at Detroit, county of Wayne, State of Michigan, have invented a certain new and useful Improvement in Gas Instantaneous Vvater- Heaters, and declare the following to be a full, clear, and exact description of the same, such as Will enable others skilledin the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which-form a part of this specification.

My invention, relates to an improvement in gas instantaneous water heaters, shown in the accompanying drawings and more particularly set forth in the following specification and claim.

One of the objects of my invention is to provide a portable gas water heater which may be readily connected with the bath room or kitchen iiXtures,-or any other location in the house as required.

Another object of the invention is to reduce the cost of this type of heater by siniplifying its construction and operation.

Another object is to provideaneans where by the maximum efficiency is secured by so constructing and arranging the, parts that the water circulating in a thin film is uniformly exposed to the heat generated in the combustion chamber,-the arrangement be ing such that the heat passes both through and around the tubes between the walls of which the water circulates in a thin film.

Other advantages and improvements will hereafter appear.

In the drawings accompanying this specification :Figure 1 is a longitudinal vertical section through the heater in line with the water and gas inlet pipes. Fig. 2 is a seetional view through a fragmentary portion of the heater, and the water discharge pipe,the view being atright angles to that shown in Fig. 1. Fig. 3 is a horizontal C1( SS-S6CtlOn{ll view of the heater on line of Fig. 1. Fig. 4 is a horizontal cross sectional view on line 4- of Fig. 1, showing parts broken away to disclose the connecting ports between the upper ends of the vertical tubes. Fig. 5 is an elevation of the heater, the outer jacket being broken away and in section showing the staggered partition walls between the outer and inner burner jackets around which the water circulates as indicated by the arrows. Fig. 6 is an elevation of the device on a reduced scale.

Referring now to the letters of reference placed upon the drawings :A is an annular .chamber provided with an inner and outer spaced apart for the passage of jacket a, a, water.

B is a Water inlet pipe.

-C is a gas inlet pipe leading to the air mixing chamber 0 and from thence to the .D is a valve controlling the passage of water through the pipe B, and D is a valve controlling the delivery of gas to the burner through the pipe C both being connected and adapted for simultaneous manual operation by means of the handle D E is a gas pipe leading from the pipe C to supply a pilot light for the burner (1 and I5 is a valve to control the delivery of gas through said pipe. Dividing the space between the inner and outer jackets a, a, of the annular chamber A, are a plurality of staggered partition walls a, radially spaced from each other, which alternately extend from the upper wall A and from the lower annular ring A providing a passage a alternating at the top and bottom of the chamber around the radiating partition walls, as clearly shownin Fig. 5 of the drawings. i

F is a centrally arranged double walled tube surrounded by a plurality of similar double walled tubes Gr, but preferably shorter in length.

H is a pipe connecting the water space between the double walled chamber A and the water space in the tube F.

l are ports comiecting the water spaces of the respective tubes (l at the bottom, and J are similar ports connecting the water spaces of the several tubes G at the top to provide for the circulation of the water from the water space of the annular chamber up and down through the several vertical tubes and out through the discharge nozzle K.

L is an opening through the outer wall of the chamber A through which the may be ignited, and L is a sliding mica window supported in the frame Z to close said open ing. r

M is a pipe to carry off the products of combustion.

N are perforations for the passage of air to the burner in the lower edge of the chamber A.

Having thus indicated the several parts by reference letters, the construction and operation of the device Will be readily understood. I i

The heater is preferably supported on a suitable bracket (not shown) adjacent to'the wash bowl, bath tub, or other fixture and connections are made between the Water and gas pipes B, and C, and the respective sources of supply by hose or other suitable connections (not shown). The valve E controlling the supply of gas through the pilot light is adjusted to supply fuel for said light. 'hen hot Water is desired the handle 1) is manually operated which simultaneously delivers water to the annular chamber and opens the gas valve delivering a full charge of gas to the burner C The Water circulating up and down around the stag gored radiating partitions in the annular chamber passes by Way of the pipe H to the u'ater space in the tube F where it flows down and out through the port I into'the Water space in the connected tube G, thence up to the top of the tube G, and out through the port J to the next connected tube G, thence up and down through the several connected tubes G and out througl'l the discharge nozzle K. By the employment of a plurality of vertical annular double Walled tubes alternately connected together at the top and bottom, having a relatively narrow.

Water space between the walls and arranged 1n series in the manner indicated with an unobstructed passage for the heat through and around the tubes causes the water to be heated with great rapidity so that. upon leaving the discharge nozzle it will ha \0 attained the boiling point. By arranging the tubes vertically and in the manner indicated the entire surface of the tubes, both inside and outside, exposed to the direct action of the heata marked advantage over devices employing air-annular coil in which one portion of the pipe overlies another, thereby shielding such portion in a measure Jroin the action of the products of combrstion.

Having thus described my invention, What I claim is v o an appliance of the character described, a chamber, a Water inlet to convey water to said chamber, a plurality of vertically disposed double walled tubes having a rela tively narrow Water space between said Walls and connected together alternately at the top and bottom thereof for the passage of water through the tubes, means for conveying water from said chamber to one of said tubes for circulation of the water through all of the tubes, whereby the Water is caused to circulate the length of each tube before passing: to the next tube, a discharge outlet for the delivery of water from the tubes,

In testimony whereof, I sign this specification in the presence of two Witnesses.

JAMES SHEPHEARD. W"itnesses GRACE E, WYNKOOP,

SAMUEL E. THOMAS.

and means in the chamber to heat the Water. 

